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Is it normal for breast milk to smell metallic?

Understanding the Metallic Smell in Breast Milk
Breastfeeding is a natural and beautiful process, but it can come with its own set of questions and concerns. One such concern is the metallic smell that some mothers notice in their breast milk. While it may be alarming, this phenomenon can be attributed to several factors, primarily related to the presence of lipase, an enzyme naturally found in breast milk.
The Role of Lipase
Lipase is crucial for the digestion of fats in breast milk. However, some women may have higher levels of lipase, which can lead to a change in the smell and taste of their milk. When breast milk is stored, especially if frozen, lipase continues to break down fats, releasing fatty acids that can produce a soapy or metallic odor . This enzymatic activity is generally harmless but can affect how the milk smells and tastes, potentially leading to a refusal from the baby if the milk is perceived as off-putting.
Fresh vs. Stored Milk
Interestingly, the metallic smell is often more pronounced in stored breast milk. Many mothers report that their fresh milk smells normal, but once it is frozen and thawed, the metallic scent becomes noticeable. This is because the lipase activity can intensify during the storage process, altering the milk’s characteristics. However, some mothers have noted that their fresh milk also carries a metallic scent, which can be a sign of excess lipase even in freshly expressed milk.
What Should Mothers Do?
For mothers who notice a metallic smell in their breast milk, it is essential to understand that this is not uncommon. While breast milk typically has a slight sweet smell or may be nearly odorless, variations can occur. If the smell is concerning, mothers can take steps to manage it. For instance, scalding the milk before freezing can deactivate lipase, preventing the breakdown of fats and the subsequent odor.
Conclusion
In summary, while a metallic smell in breast milk can be surprising, it is often linked to high levels of lipase and is generally not a cause for concern. Understanding the reasons behind this change can help mothers feel more at ease and make informed decisions about their breastfeeding journey. If there are ongoing concerns or if the baby refuses to drink the milk, consulting with a lactation consultant can provide additional support and guidance.

Why does my milk taste metallic?

Oxidized flavour is a result of the effect of oxygen on the milk phospho-lipids which causes the development of various flavours – cardboard, metallic, fish or oily. Oxidation of polyunsaturated fatty acids of the phosphatides of the globular membrane induces the formation of hydrogen-peroxide.

What is the 120 pumping rule?

The first 12 weeks of your breastfeeding journey requires frequent breastmilk removal, stimulating healthy milk production. Studies show moms who exclusively pump for a minimum of 120 minutes per day can make enough to feed their babies primarily breastmilk.

What happens if a baby drinks bad breast milk?

Can babies get sick from old breast milk? If your baby has had spoiled breast milk, they’ll likely let you know. They may throw up, or have an upset stomach, diarrhea or fever. It’s important to call your pediatrician if you think your baby may be sick from having spoiled breast milk.

How to get rid of metallic taste in breast milk?

Scald your breastmilk to reduce high lipase.
If your breastmilk does have high lipase, you can scald your milk before freezing or storing to prevent this from happening.

How to know if breastmilk is spoiled?

It will also smell bad, much like spoiled cow’s milk. And, like spoiled cow’s milk, breast milk that’s old will taste sour. (It’s fine to taste your breast milk to check!) Always label your pumped milk with a time and date so you can tell how old it is.

Why does my breast milk smell like metal?

Signs You Have High Lipase Breast Milk
You can’t see lipase, but changes in taste or smell can indicate its presence. The most notable signs of high lipase milk are changes in taste and smell. You might notice your milk having a scent or taste similar to metallic, vomit, eggs, soap, or fishy.

What is the 5 5 5 rule for breast milk?

Something I recommend to moms is the 5-5-5 rule. Try and use milk within five hours at room temperature, five days in the fridge, and by five months in the freezer.

How to know if breast milk is spoiled?

Human breast milk can spoil just like any other kind of milk. This leads to a sharp, sour smell and flavor. There’s no way to save spoiled milk. You should be able to tell it’s spoiled by tasting a sip of it yourself.

What does spoiled breast milk smell like?

If your milk smells “sour” or “rancid” this can be from oxidation. These changes may occur shortly after the milk is expressed, or it may occur after the expressed milk is frozen and then defrosted.

Can my baby drink high lipase milk?

WHAT CAN I do about it? First thing’s first, having high lipase milk does not mean your milk is “bad”! Some babies take high lipase milk without thought. Yes, it is perfectly safe for babies to drink high lipase milk.

Natasha Lunn

Tash is an IBCLC and Business Coach helping fellow IBCLCs create fun, profitable businesses that are more than just an expensive hobby. Before becoming an IBCLC and starting her private practice - The Boobala, Tash graduated as an Osteopath in 2008 and has been in Private Practice in South West Sydney. She was also a volunteer Breastfeeding Counsellor and Community Educator with the Australian Breastfeeding Association for 6 years. Through her business, Your Lactation Biz, Tash coaches and creates products to help new and seasoned IBCLCs build businesses that suit their personality and lifestyle.

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